Patents by Inventor Randall D. Mattson

Randall D. Mattson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Grapple positioning device
    Patent number: 6315344
    Abstract: A grapple positioning device is described for attachment to a grapple and boom, wherein the grapple is pivotably mounted to an end of the boom. The device includes an extensible ram mountable to the boom and extending to a pusher plate. A follower is mountable to the grapple, and the ram is operable to extend and move the pusher plate against the follower and thereby pivot the grapple away from the boom. The ram is also operable to retract to move the pusher plate in a direction toward the boom and away from the follower.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: November 13, 2001
    Inventors: Randall D. Mattson, Todd R. Brusell